Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Doses of phenylephrine, which increase blood pressure 12.5 mm Hg before and during ganglion blockade with trimethaphan. The sensitivity to the alpha-agonist phenylephrine at baseline is in patients (HTN, black symbols) significantly higher compared to controls (CTR). After interruption of the baroreflex during ganglion blockade this difference is markedly diminished.
